Girl, Missing is a 2006 English-language young adult thriller novel by Sophie McKenzie.

A few days later, she finds a diary containing details about her adoption and the name Sonia Holtwood.

They run into a police officer Suzanna Sanders who gives them a ride in her car and offers them orange juice.

While with Glane, Lauren discovers that Martha's parents were Annie and Sam Purditt, who live in Evanport.

Lauren moves in with her two sisters, Shelby and Madison Purditt, but has trouble fitting in with the rest of the family.

She begins receiving threatening text messages telling her to "keep quiet or die."

Finally, Holtwood sends Lauren a text saying her sister will die unless she goes to Sam's boat, the Josephine May.